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tall tails (mander.xyz)
submitted 1 year ago by to c/science_memes@mander.xyz
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[–] 25 points 1 year ago (10 children)

They always use mammals for that kind of comparison. Show me a reptile with that kind of muscle/fat composition.

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  • [–] 6 points 1 year ago (7 children)

    Dinosaurs were not reptiles. They were warm blooded, and birds descended from them.

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  • [–] 3 points 1 year ago (6 children)

    Birds are reptiles. Commonly, we wouldn't say so, but they're in the same clade. The avians are closer related to the crocadilians than the crocs are to other reptiles like the squamates - lizards and snakes.

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  • [–] 2 points 1 year ago (5 children)

    Also people are fish. You can’t evolve out of your clade.

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  • [–] 4 points 1 year ago (4 children)

    Hank Green went off about this recently. "Fish" just has no scientific meaning, and there are fish tetrapods.

    I don't necessarily disagree, but ultimately there is a problem in classifying "fish" in the modern scientific taxonomy system - it has no good phylum to fit in as its a term that's a bit more broad than that, but not broad enough to make for a kingdom.

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  • [–] 1 point 1 year ago* (3 children)

    Sure, but isn’t the point that what we’d call ‘fish’ back when everything lived in the oceans, like pre-Devonian, the ancestors of all modern life?

    We can’t out-evolve our clade, so all land animals are fish? And also we’re all amphibians, and everything directly leading to us? Insects, plants, and fungi are separate, but we’re technically fish?

    Or am i misunderstanding that?

    (e: if there are no ‘fish tetrapods’, where did tetrapods come from?)

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  • [–] 3 points 1 year ago (2 children)

    Yeah, I'm not really arguing for or against the word fish technically fitting all land animals. I think that using it that way showcases the problem of trying to fit common terminology like "fish" into the scientific taxonomic system. The definition of fish has no use in that context.

    Also, there are fish which are also arguably tetrapods https://en.m.wikipedia.org/wiki/Sarcopterygii

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  • [–] 1 point 1 year ago* (1 child)

    That’s fair. Honestly, all of taxonomy is just lines we draw, and all of evolution is really a fuzzy gradient. We can’t even figure out where the line for ‘human’ begins, because that’s also a meaningless term, really.

    So the fact that we’re fish is as meaningful (or meaningless) as the fact that we’re human.

    (And thanks for the link! That’s a cool, uh, ‘fish’.)

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  • [–] 2 points 1 year ago

    Yeah, this is the distinction I'm trying to draw between "common" and "scientific" terminology. Scientific taxonomy is based on evolutionary history, rather than just superficial traits like "has gills, fins, and lives mostly in water."

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